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Finding the Fourth Proportional to 315,029.40, 472,587.30 and 104,645.40

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Solution

The fourth proportional to 315,029.40, 472,587.30 and 104,645.40 is: 156,982.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,029.40 : 472,587.30 = 104,645.40 : x
  2. Step 2: Convert to fraction form
    315,029.40/472,587.30 = 104,645.40/x
  3. Step 3: Cross multiply
    315,029.40x = 472,587.30 × 104,645.40
  4. Step 4: Simplify right side
    315,029.40x = 49,454,087,043.42
  5. Step 5: Solve for x
    x = 49,454,087,043.42/315,029.40
  6. Step 6: Final answer
    x = 156,982.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.